Home / 5,109.58-7,051.21-2,986.57

Finding the Fourth Proportional to 5,109.58, 7,051.21 and 2,986.57

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Solution

The fourth proportional to 5,109.58, 7,051.21 and 2,986.57 is: 4,121.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.58 : 7,051.21 = 2,986.57 : x
  2. Step 2: Convert to fraction form
    5,109.58/7,051.21 = 2,986.57/x
  3. Step 3: Cross multiply
    5,109.58x = 7,051.21 × 2,986.57
  4. Step 4: Simplify right side
    5,109.58x = 21,058,932.25
  5. Step 5: Solve for x
    x = 21,058,932.25/5,109.58
  6. Step 6: Final answer
    x = 4,121.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.